<template>
  <div>
    <label v-for="(item, index) in arr" :key="index">
      <input type="checkbox" name="" id="" :value="item" v-model="checkeds" />
      <span>{{ item }}</span>
    </label>
    <p>你选中的元素，累加值的和为：{{ sum }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      arr: [9, 15, 19, 25, 29, 31, 48, 57, 62, 79, 87],
      check: [],
      add: 0,
    };
  },
  computed: {
    sum() {
      return this.check.reduce((add, item) => add + item, 0);
    },
  },
};
</script>

<style scoped></style>
